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When Is a Normal Variable Not a Normal Variable?

Summary: [This abstract is based on the author's abstract.]

Most of the time, statistical quality control techniques automatically assume that variables data are distributed normally. This assumption is frequently negated by the consequences of sorting and inspection. The choice of a dimension is a composite of one or more elements, each one having a normal error component. This can result in nonnormal distributions with misleading properties.

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  • Topics: Statistics
  • Keywords: Nonnormal distributions, Half-normal, Folded normal, Rayleigh, Maxwell, Chi-square, Derivative distributions
  • Author: King, James R.
  • Journal: Quality Engineering